nsHTMLWin32ObjectAccessible.cpp

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- *//* ***** BEGIN LICENSE BLOCK ***** * Version: MPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Mozilla Public License Version * 1.1 (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is mozilla.org code. * * The Initial Developer of the Original Code is * Netscape Communications Corporation. * Portions created by the Initial Developer are Copyright (C) 1998 * the Initial Developer. All Rights Reserved. * * Contributor(s): * John Gaunt (jgaunt@netscape.com) (original author) * * Alternatively, the contents of this file may be used under the terms of * either of the GNU General Public License Version 2 or later (the "GPL"), * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the MPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the MPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */#include "nsHTMLWin32ObjectAccessible.h"#include "nsAccessibleWrap.h"
nsHTMLWin32ObjectOwnerAccessible::nsHTMLWin32ObjectOwnerAccessible(nsIDOMNode* aNode, nsIWeakReference* aShell, void* aHwnd):
nsAccessibleWrap(aNode, aShell)
{
mHwnd = aHwnd;
}
NS_IMETHODIMP nsHTMLWin32ObjectOwnerAccessible::Shutdown()
{
nsAccessibleWrap::Shutdown();
mNativeAccessible = nsnull;
return NS_OK;
}
/** * Our only child is a nsHTMLWin32ObjectAccessible */
NS_IMETHODIMP nsHTMLWin32ObjectOwnerAccessible::GetFirstChild(nsIAccessible **aFirstChild)
{
*aFirstChild = mNativeAccessible;
if (!mNativeAccessible) {
if (!mHwnd) {
return NS_OK;
}
mNativeAccessible = newnsHTMLWin32ObjectAccessible(mHwnd) ;
SetFirstChild(mNativeAccessible);
*aFirstChild = mNativeAccessible;
}
NS_IF_ADDREF(*aFirstChild);
return NS_OK;
}
NS_IMETHODIMP nsHTMLWin32ObjectOwnerAccessible::GetLastChild(nsIAccessible **aLastChild)
{
return GetFirstChild(aLastChild);
}
NS_IMETHODIMP nsHTMLWin32ObjectOwnerAccessible::GetChildCount(PRInt32 *aChildCount)
{
nsCOMPtr<nsIAccessible> onlyChild;
GetFirstChild(getter_AddRefs(onlyChild));
*aChildCount = onlyChild ? 1 : 0;
return NS_OK;
}
nsHTMLWin32ObjectAccessible::nsHTMLWin32ObjectAccessible(void* aHwnd):
nsLeafAccessible(nsnull, nsnull)
{
mHwnd = aHwnd;
if (mHwnd) {
// The plugin is not windowless. In this situation we use // use its inner child owned by the plugin so that we don't get// in an infinite loop, where the WM_GETOBJECT's get forwarded// back to us and create another nsHTMLWin32ObjectAccessible
HWND childWnd = ::GetWindow((HWND)aHwnd, GW_CHILD);
if (childWnd) {
mHwnd = childWnd;
}
}
}
NS_IMPL_ISUPPORTS_INHERITED1(nsHTMLWin32ObjectAccessible, nsAccessible, nsIAccessibleWin32Object)
NS_IMETHODIMP nsHTMLWin32ObjectAccessible::GetHwnd(void **aHwnd)
{
*aHwnd = mHwnd;
return NS_OK;
}